{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical", "Disease"], "input": "We briefly describe two patients suffering from recent - onset atrial fibrillation , who experienced an acute devastating low back pain a few minutes after initiation of intravenous amiodarone loading ."}
{"Chemical": ["amiodarone"], "Disease": ["atrial fibrillation", "low back pain"]}